Comparison of the health of the miners of undeground mines and bituminous coal mines / Petr Brhel, Zuzana Rybáková
  Bibliogr.: p. 30. - Abstr. eng.
  In: Central European Journal of Occupational and Environmental Medicine. - ISSN 1219-1221. - 1995. 1. évf. 1. sz., p. 25-30.